Lifting mechanism for plows



July 4, 1944. w, AIPDOANE 2,352,946

LIFTING MECHANISM FOR FLOWS Original FiledJan. 4, 1940 2 Sheets-Sheet l o I William fl-floane Jilly 4, 1944- w. A. DOANE LIFTING MECHANISM FOR FLOWS Original Filed Jan. 4. 1940 2 Sheets-Sheet 2 Patented July 4, 1944 UNITED; STATES PATENT OFFICE i l I 2,352,946 a i 'LIFTING MEGHANISM Fort PLOWS William A. Doane, Waverly, N. Y.

Original application January 4, 1940, Serial No. 312,422. Divided and this application-March 20,1941, Serial No. 384,401 Y 2Claims. (01.192-62) This invention relates to aliftingmechanism associated with a wheel of a wheeled plow and constructed andarranged for adjustment in a novel manner so that the frame of the plow may be maintained in lowered, raised or intermediate height, regardless of the inclination of the land.

It is particularly aimed to provide a construction wherein the raising and lowering of the frame will be effected through movement of a wheel and wherein novel clutch means are provided to cause the raising or lowering movement and are associated with means to prevent damage to the parts through excessive movement in either direction.

The more specific objects and advantages will become apparent from a consideration of the description following taken in connection with accompanying drawings illustrating an operative embodiment.

In said drawings:

Figure 1 is a plan view of a reversible plow construction in connection with which the invention is employed;

Figure 2 is a horizontal section taken on the plane of line 2--2 of Figure 1;

Figure 3 is a fragmentary side elevation par ticularly showing the left hand wheel of the plow and the parts constituting the invention;

Figure 4 is a vertical section taken on the plane of line 44 of Figure 3;

Figure 5 is a detail section taken on the plane of line 5-5 of Figure 4;

Figure 6 is a front elevation of the outside drum, and

Figure .7 is a fragmentary elevation of the outside drum and associated parts.

Referring specifically to the drawings wherein like reference characters designated like or similar parts, the machine disclosed is a two way reversible tractor plow like that disclosed in my Patent 2,239,596, issued April 22, 1941, and which it is to be understood is shown by way of example only to facilitate an understanding of the invention. Th present application constitutes a division of the said patent. Said two way reversible tractor plow as a whole is designated I9 and has a skeleton metallic frame as at H supported by ground wheels at l2 and I3, mounted and operable so that they may be adjusted to operate at different heights to maintain the plows in raised and lowered positions and to operate at different heights to maintain the frame level with respect to the ground. The plows are shown at 25. Coulters III] are provided in advance of the plows, being journaled on the lower ends of standards H2. I

The wheel l3 and its mounting constitute no part of the present invention herein claimed. However, it is adjustably mounted like and corresponds to the wheel in'the aforesaid allowed application on a transverse shaft or rod 62 which is adapted to be rocked in either direction for adjustment and normally to be rigidly secured to the frame I Such rod 62 has a lever '63 and coacting lock mechanism associated therewith, which is operable to rock the shaft 62 and secure it at the different angles of adjustment.

The previously mentioned wheel l2 has a rim 69, spokes Ill and a hub Hub 'H is journaled on an axle 12 having an upwardly extendin crank arm 13 which is pivotally suspended by a pin 14 on an arm 15 depending from a lever 16 pivoted at H to the frame l0 and adapted to be secured thereto at various adjustments. An annular drum 18 is welded or otherwise fastened at its inner edge to the spokes I0 concentrically of the wheel l2 and it has longitudinal corrugations or teeth 19 on the inner surface thereof.

An outer drum 89 surrounds the drum I8, having an outer wall or disk 8| which is pinned or otherwise rigidly fastened to the axle 12. Within the drum I8 is a latch member 83 which is Div--- oted at 84 to an arm 84a fixed on axle 12, to which latch member and arm a contractile coil spring is fastened to urge a pin 86 journaled on the latch 83 into engagement with adjacent teeth E9, to latch or look the drum 18 and together whereby turning of wheel l2 will also turn drum 89. pivoted at 88 on the exterior of drum 80 and extends through an enlarged slot 89 in disk 8|. Said lever 81 has enlarged ends 90 and 9| located adjacent notches 99a, and Blu in the periphery of disk 8!.

The said transverse shaft or rod 62 has a depending arm or crank 94 which is slidably engaged in a bearing 95, fastened to a cap 92 which is loosely supported on axle 12 and an outwardly extending annular flange 93 on'disk 8|. A collar 95 surrounds the crank 94 and a bell crank lever 9! is pivoted thereto at 98 to one end of which a link 99 is pivoted and which in turn is pivoted to a slidable element lllll mounted on the crank 94. Such element I90 has an arm I [H which is engageable against enlargement 90 and in notch 99a or in enlargement 9| and notch 9|a, at the extremes of raising and lowering movement of the frame to automatically disengage the pin 86 from the teeth 19 at both extremes, enabling Said pin 86 is rigid on an arcuate lever 81 relative movement of the drums or parts adjustably mounting the wheel and free rotation of wheel l2 thereafter with drum [8 rotating with it. Lever 91 may be actuated by a draw element such as a cable I06 fastened to the same at one end and at III! at the other end to the lever 16, the cable passing through a guide I08 on such lever. When the elevation of the frame II is to be varied, lever 91 is rocked in order to slide the arm IBI to rock lever 81 and engage the latch pin 86 with the teeth 19, whereupon the axle I2. will swing to the desired extent on the pin 14, following which, the lever 91 is released, slide I00 is restored by spring I03 to normal position and the arcuate rod 89 again restores the latch 83 out of engagement with adjacent teeth 19, the movement of the crank 94 having been accommodated in the slide 95 mounted on the turnable cap 93.

Various changes may be resorted to provided they fall within the spirit and scope of the appended claims.

I claim as my invention:

1. In mechanism of the class described, a drum, a drum concentric with thefirst-mentioned drum and relatively to which the first-mentioned drum turns, a lever pivoted on the second-mentioned drum, a pin on said lever, means on the first mentioned drum engageable by the pin to cause the drums to rotate together, a transverse rod member capable of rocking adjustment, an element loose relatively to the drums, a crank on the rod member radially slidably connected to the element, latching means on the crank coacting with said lever and operative to cause the pin to secure the drums together at different adjustments, and means operable on the crank tocontrol the latch means.

WILLIAM A. DOANE. 

